ilc7083 Fairchild Semiconductor, ilc7083 Datasheet - Page 10

• Manufacturer Part Number: ilc7083
• Description: 150ma Sot-23 Low Noise Cmos Rf-ldo ?egulator
• Manufacturer: Fairchild Semiconductor

ILC7083/ILC7084
Evaluation Board Parts List
Grounding Recommendations
1. Connect C
2.
3. On multilayer boards use component side copper for
4. If using a DC-DC converter in your design, use a star
Recommended Ceramic Output Capacitors
10
Cnoise
Label
2.2µF
4.7µF
C
Cout
1µF
Cin
U1
J1
OUT
“GROUND PLANE”.
Keep the ground side of C
the “LOCAL GROUND” and not directly to the
“GROUND PLANE”.
grounding around the ILC7083 and connect back to a
“GROUND PLANE” using vias.
grounding system with separate traces for the power
ground and the control signals. The star should radiate
from where the power supply enters the PCB.
GRM42-6X5R475K10
GRM40 Y5V 105Z16
ECU-V1H103KBV
Capacitor Size
ILC7083AIM5-30
IN
Part Number
69190-405
between V
0805
0805
0805
1206
1206
1206
0805
0805
1206
1206
1206
IN
OUT
of the ILC7083 and the
and C
0 to 150mA
0 to 150mA
0 to 150mA
Fairchild Semiconductor 150mA RF LDO™ regulator
I
OUT
NOISE
Manufacturer
Panasonic
(for Figure 9)
muRata
muRata
connected to
Berg
Dielectric
X5R
X7R
X7R
X7R
X7R
X5R
X5R
X5R
X5R
X5R
X7R
Layout Considerations
1.
2.
3.
4.
Figure 9 shows how this circuit can be translated into a PCB
layout.
Connector, four position header
Ceramic capacitor, 1µF,16V, SMT (size 0805)
Ceramic capacitor, 0.01µF,16V, SMT (size 0603)
Ceramic capacitor, 4.7µF,16V, SMT (size 1206)
GRM42-6X7R105K016
GRM42-6X5R475K010
Place all RF LDO related components; ILC7083, input
capacitor C
capacitor C
Keep the output capacitor C
as possible with very short traces to the V
pins.
The traces for the related components; ILC7083, input
capacitor C
capacitor C
close to the LDO.
Maintain a separate “LOCAL GROUND” remote from
the “GROUND PLANE” to ensure a quiet ground near
the LDO.
GRM40X7R105K010
GRM40X5R225K 6.3
C2012X5R1A105KT
C2012X5R0J225KT
LMK212BJ105KG
EMK316BJ225ML
EMK316BJ105KL
LMK316BJ475ML
TMK316BJ105KL
Part Number
IN
OUT
IN
OUT
, noise bypass capacitor C
, noise bypass capacitor C
as close together as possible.
can be run with minimum trace widths
Description
OUT
Capacitor Vendor
as close to the ILC7083
Taiyo-Yuden
Taiyo-Yuden
Taiyo-Yuden
Taiyo-Yuden
Taiyo-Yuden
REV. 1.0.9 1/28/03
muRata
muRata
muRata
muRata
NOISE
NOISE
TDK
TDK
OUT
and output
and output
and GND